What word do you use when you refer to a vagina

...Down there? What are you, 12? :P

I kid. But still, that's a little strange for an adult. Do you not even say vagina?

"Doctor, my down there hurts!"
"What down there exactly? There's a whole body beneath your head you know."
"You know... down THERE!"
"Your feet? Your stomach?"
"THERE! DOWN! In that... Down there bit..."
"Your vagina?"
"YOU PERVERT! DISGUSTING! I'm leaving!"